This squishy robot worm needs no batteries

It’s not just cute but a breakthrough in soft robotics and design, requiring no external power supply at all.

Imagine a robot. But instead of sleek metal on wheels, with an elaborate blueprint of circuits and whirring gears, it’s a humble blob: a gelatinous lump stuck to the ground, which trudges around by squishing its body then elongating it again, inch by inch—like an inchworm—on its steady slog to anywhere.

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